Skip to main content

Phentermine Pills

Phentermine is a prescription medicine used to lessen appetite. It helps with weight loss by making you less hungry.

Like other weight-loss medicines ordered by providers, phentermine is meant to be only part of a weight-loss plan. For example, it can be used with healthy eating, physical activity, and behavior change. Phentermine is for people with obesity or overweight who haven’t been able to lose enough weight with diet and exercise alone to improve their health.

Common side effects of phentermine include:

  • Faster heart rate
  • Sleeplessness
  • Nervousness
  • Constipation

Phentermine is one of the most prescribed weight-loss medicines. But it isn’t a good choice for people with heart disease, high blood pressure, an overactive thyroid gland, or glaucoma. It isn’t appropriate for pregnant people or those trying to conceive or people who are breastfeeding.